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Virus Profile: BackDoor-DSA!D3DE602615BD

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 7/16/2012
Date Added: 7/16/2012
Origin: Unknown
Length: 838414
Type: Trojan
Subtype: Remote Access
DAT Required: 6774
Removal Instructions
   
 
 
   

Description

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Indication of Infection

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

   

Virus Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionBackDoor-DSA
Length838414 bytes
MD5d3de602615bdf02a441a05042c3d575d
SHA1910eb6ecacaf2eab505f956a0f2156651b5cf5d0


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareBackdoor.Win32.Udr!IK
ahnlabWin-Trojan/Udr.97751
avastWin32:Malware-gen
AVG (GriSoft)Generic27.SKE
aviraBDS/Backdoor.Gen
KasperskyBackdoor.Win32.Udr.a
BitDefenderTrojan.Generic.6785658
clamavTrojan.Agent-167539
Dr.WebBackDoor.Udr.1
F-ProtW32/Malex.A
FortiNetW32/Udr.AT!tr
MicrosoftTrojan:Win32/Malex.gen!A
SymantecBackdoor.Trojan
EsetWin32/Agent.UDR
normanW32/Injector.ERR
pandaDialer.CKP
SophosMal/Generic-E
Trend MicroBKDR_MALEX.SMOA
vba32OScope.Backdoor.Udr
V-BusterTrojan.Malex.Gen.1

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Adds or modifies a COM object.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaBackDoor-DSA
McAfee SupportedBackDoor-DSA



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

910eb6ecacaf2eab505f956a0f2156651b5cf5d0

The following files have been added to the system:

  • %WINDIR%\SYSTEM32\explorer.exe
  • %WINDIR%\SYSTEM32\vcl32.exe
  • %WINDIR%\SYSTEM32\concp32.exe
  • %WINDIR%\SYSTEM32\msqir32.exe
  • %WINDIR%\spoolsv.exe
The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\INPROCSERVER32\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\
The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\VCL = vcl32.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\AX = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\SM = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\U0 = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\U1 = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\U2 = [binary data]
  • HKEY_LOCAL_MACHINE\SOFTWARE\CLASSES\CLSID\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\V = 165
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\{74630177-8B9A-11D5-EBA1-F78EEEEEE983}\STUBPATH = msqir32.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\VCL = vcl32.exe
   

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.